GoKawiilAnubis anti-scraper tool takes a year to add WebAssembly support
Anubis, a proof-of-work challenge system designed to block aggressive AI scrapers, has finally shipped a WebAssembly-based version after roughly a year of development. The tool works similarly to Hashcash, forcing browsers to solve a computational puzzle before accessing a website, which is negligible for individual users but costly at scraper scale. Site administrators use it as a stopgap measure while better methods for detecting headless browsers are developed.
GoKawiil's interpretation of the reporting above, not reported fact.
As AI companies scrape the web more aggressively for training data, tools like Anubis represent a growing arms race between site owners trying to protect server resources and automated bots trying to harvest content at scale. The reliance on proof-of-work challenges, however, can create friction or downtime for legitimate visitors, highlighting the tradeoffs involved in current anti-scraping defenses.
- Anubis uses a Hashcash-style proof-of-work challenge to deter mass AI scraping.
- The WebAssembly version took about a year to develop and ship.
- It is described as a temporary fix until better headless-browser fingerprinting methods exist.
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Published there as: “It took a year to ship WebAssembly in Anubis”
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